Butchbian, is a subset of lesbian in which a lesbian and butch individual has a preference for butches. It might be that an individual is attracted to non-binary/feminine aligned individuals that embrace masculinity, whilst also having a masculine presentation. Butchbian can be used as an identity for what was the undefined phenomenon of 'butch-for-butch'.
The term was heavily inspired by both butch and lesbian, and had been coined on October 31st, 2021 (by somemaniac). It's purpose was to not exclude lesbians of other presentations but to help other lesbians further express their identity. Butchbian and lesbian can be used spontaneously, similar to how a-spec identities can be used with other orientations.